Ann, if you are looking for species with RRV resistance, both R. palustris (thin leaved) and R. setigera (soft, almost velvety leaves) have never come down with anything here in my garden.

RRV cut a swath through my garden, taking out all of the common moss rose patch (100' suckered row), the wild multifloras, and the R. Canina (native to Britain). It stopped at the R. setigera hedge.

Also, those two natives, palustris and setigera, never get blackspot. They have some good genes to use in breeding!